Carl S

It all depends on your local smog requirements.

Carl

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169787258.524824.48800@p10g2000cwp.googlegro ups.com...
> Earle Horton!? Your the one who left the post I found from back in '98.
> What a trip. It sounds like I'm going to have to swap out the entire
> underside of my rig to get a 6cyl in there. If I'm going to do that I
> might as well go for a V8! I've found plenty of tech notes on V8
> swaps, now I know why.
>
> On Jan 24, 10:48 pm, "Earle Horton" <e...@vascongado.usa> wrote:
>> The Cherokee used an electronic four speed automatic with overdrive.
>> This
>> was too long for the Wrangler, which used a three speed automatic to save
>> length. He might be able to shoe horn the Cherokee auto in there, but he
>> may then have drive line problems without a slip joint eliminator. The
>> AX15
>> manual transmission may be the right length, but I believe it is a bit
>> longer than the AX5, so he will likely need drive shafts. The best way
>> to
>> accomplish this swap is to trade the vehicle in on a six cylinder. I
>> cannot
>> over-emphasize how much easier that would be. I am pretty happy with
>> mine,
>> although I do have a throttle body and cat-back upgrades. It will do
>> eighty
>> on level ground, which is way above the speed limit.
>>
>> Earle
>>
>> "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in
>> messagenews:zJednZIFbZ-M1SXYnZ2dnUVZ_qmpnZ2d@comcast.com...
>>
>>
>>
>> > You will need a 6cyl transmission. The AX5 will not hold up to the 4.0.
>> Your
>> > best bet is to find a wrecked Cherokee with either the auto or manual
>> > (Though the auto would probably be easier) and swap the engine,
>> > transmission, ECU and wiring harness. You'll also need new driveshafts.
>> The
>> > rear you *may* be able to salvage from an automatic wrangler. The
>> > cherokee
>> > front shaft *may* work on the wrangler front shaft. Your stock front
>> > shaft
>> > may also work, but the rear shaft wont (incorrect spline count).
>>
>> > It's a difficult and complicated swap. I don't belive it's been done by
>> many
>> > 2.5L owners. I had an 89 YJ 2.5L that turned 33" tires through 4.10
>> gearing
>> > without issue.
>>
>> > You're better off buying a 4.0 throttle body, header, and exhaust IMO.
>>
>> > Carl
>>
>> > "Chehalisd" <chehal...@netscape.net> wrote in message
>> >news:1169701503.985146.101460@m58g2000cwm.googleg roups.com...
>> > > I've been combing the web for conversion notes from a 2.5L SE to 4.0L
>> > > Sport engine swap with no luck. I found a thread on this forum from
>> > > back in 1998 that said I'd need the Sport transmission and bell
>> > > housing
>> > > to go with the 6cyl. and that the swap would probably be pretty
>> > > boring,
>> > > but no further details. I have to believe this has been done by many
>> > > unsatisfied 4cyl. owners. Does anyone have any personal experience
>> > > or
>> > > know of a link?- Hide quoted text -- Show quoted text -
>

Earle Horton

It's a waste of time in my opinion. You want to step back and think of
easier ways to do this. Taking over an abandoned project you find in the
newspaper is one. You could probably find one for ten cents on the dollar.
If you like fabricating parts and can do it well, then maybe this isn't such
a bad idea. But if you were like that, you would already have your own
custom off road vehicle business and more orders than you could possibly
handle.

Earle

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169787258.524824.48800@p10g2000cwp.googlegro ups.com...
> Earle Horton!? Your the one who left the post I found from back in '98.
> What a trip. It sounds like I'm going to have to swap out the entire
> underside of my rig to get a 6cyl in there. If I'm going to do that I
> might as well go for a V8! I've found plenty of tech notes on V8
> swaps, now I know why.
>
> On Jan 24, 10:48 pm, "Earle Horton" <e...@vascongado.usa> wrote:
> > The Cherokee used an electronic four speed automatic with overdrive.
This
> > was too long for the Wrangler, which used a three speed automatic to
save
> > length. He might be able to shoe horn the Cherokee auto in there, but
he
> > may then have drive line problems without a slip joint eliminator. The
AX15
> > manual transmission may be the right length, but I believe it is a bit
> > longer than the AX5, so he will likely need drive shafts. The best way
to
> > accomplish this swap is to trade the vehicle in on a six cylinder. I
cannot
> > over-emphasize how much easier that would be. I am pretty happy with
mine,
> > although I do have a throttle body and cat-back upgrades. It will do
eighty
> > on level ground, which is way above the speed limit.
> >
> > Earle
> >
> > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in
messagenews:zJednZIFbZ-M1SXYnZ2dnUVZ_qmpnZ2d@comcast.com...
> >
> >
> >
> > > You will need a 6cyl transmission. The AX5 will not hold up to the
4.0.
> > Your
> > > best bet is to find a wrecked Cherokee with either the auto or manual
> > > (Though the auto would probably be easier) and swap the engine,
> > > transmission, ECU and wiring harness. You'll also need new
driveshafts.
> > The
> > > rear you *may* be able to salvage from an automatic wrangler. The
cherokee
> > > front shaft *may* work on the wrangler front shaft. Your stock front
shaft
> > > may also work, but the rear shaft wont (incorrect spline count).
> >
> > > It's a difficult and complicated swap. I don't belive it's been done
by
> > many
> > > 2.5L owners. I had an 89 YJ 2.5L that turned 33" tires through 4.10
> > gearing
> > > without issue.
> >
> > > You're better off buying a 4.0 throttle body, header, and exhaust IMO.
> >
> > > Carl
> >
> > > "Chehalisd" <chehal...@netscape.net> wrote in message
> > >news:1169701503.985146.101460@m58g2000cwm.googleg roups.com...
> > > > I've been combing the web for conversion notes from a 2.5L SE to
4.0L
> > > > Sport engine swap with no luck. I found a thread on this forum from
> > > > back in 1998 that said I'd need the Sport transmission and bell
housing
> > > > to go with the 6cyl. and that the swap would probably be pretty
boring,
> > > > but no further details. I have to believe this has been done by
many
> > > > unsatisfied 4cyl. owners. Does anyone have any personal experience
or
> > > > know of a link?- Hide quoted text -- Show quoted text -
>

Earle Horton

It's a waste of time in my opinion. You want to step back and think of
easier ways to do this. Taking over an abandoned project you find in the
newspaper is one. You could probably find one for ten cents on the dollar.
If you like fabricating parts and can do it well, then maybe this isn't such
a bad idea. But if you were like that, you would already have your own
custom off road vehicle business and more orders than you could possibly
handle.

Earle

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169787258.524824.48800@p10g2000cwp.googlegro ups.com...
> Earle Horton!? Your the one who left the post I found from back in '98.
> What a trip. It sounds like I'm going to have to swap out the entire
> underside of my rig to get a 6cyl in there. If I'm going to do that I
> might as well go for a V8! I've found plenty of tech notes on V8
> swaps, now I know why.
>
> On Jan 24, 10:48 pm, "Earle Horton" <e...@vascongado.usa> wrote:
> > The Cherokee used an electronic four speed automatic with overdrive.
This
> > was too long for the Wrangler, which used a three speed automatic to
save
> > length. He might be able to shoe horn the Cherokee auto in there, but
he
> > may then have drive line problems without a slip joint eliminator. The
AX15
> > manual transmission may be the right length, but I believe it is a bit
> > longer than the AX5, so he will likely need drive shafts. The best way
to
> > accomplish this swap is to trade the vehicle in on a six cylinder. I
cannot
> > over-emphasize how much easier that would be. I am pretty happy with
mine,
> > although I do have a throttle body and cat-back upgrades. It will do
eighty
> > on level ground, which is way above the speed limit.
> >
> > Earle
> >
> > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in
messagenews:zJednZIFbZ-M1SXYnZ2dnUVZ_qmpnZ2d@comcast.com...
> >
> >
> >
> > > You will need a 6cyl transmission. The AX5 will not hold up to the
4.0.
> > Your
> > > best bet is to find a wrecked Cherokee with either the auto or manual
> > > (Though the auto would probably be easier) and swap the engine,
> > > transmission, ECU and wiring harness. You'll also need new
driveshafts.
> > The
> > > rear you *may* be able to salvage from an automatic wrangler. The
cherokee
> > > front shaft *may* work on the wrangler front shaft. Your stock front
shaft
> > > may also work, but the rear shaft wont (incorrect spline count).
> >
> > > It's a difficult and complicated swap. I don't belive it's been done
by
> > many
> > > 2.5L owners. I had an 89 YJ 2.5L that turned 33" tires through 4.10
> > gearing
> > > without issue.
> >
> > > You're better off buying a 4.0 throttle body, header, and exhaust IMO.
> >
> > > Carl
> >
> > > "Chehalisd" <chehal...@netscape.net> wrote in message
> > >news:1169701503.985146.101460@m58g2000cwm.googleg roups.com...
> > > > I've been combing the web for conversion notes from a 2.5L SE to
4.0L
> > > > Sport engine swap with no luck. I found a thread on this forum from
> > > > back in 1998 that said I'd need the Sport transmission and bell
housing
> > > > to go with the 6cyl. and that the swap would probably be pretty
boring,
> > > > but no further details. I have to believe this has been done by
many
> > > > unsatisfied 4cyl. owners. Does anyone have any personal experience
or
> > > > know of a link?- Hide quoted text -- Show quoted text -
>

Earle Horton

It's a waste of time in my opinion. You want to step back and think of
easier ways to do this. Taking over an abandoned project you find in the
newspaper is one. You could probably find one for ten cents on the dollar.
If you like fabricating parts and can do it well, then maybe this isn't such
a bad idea. But if you were like that, you would already have your own
custom off road vehicle business and more orders than you could possibly
handle.

Earle

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169787258.524824.48800@p10g2000cwp.googlegro ups.com...
> Earle Horton!? Your the one who left the post I found from back in '98.
> What a trip. It sounds like I'm going to have to swap out the entire
> underside of my rig to get a 6cyl in there. If I'm going to do that I
> might as well go for a V8! I've found plenty of tech notes on V8
> swaps, now I know why.
>
> On Jan 24, 10:48 pm, "Earle Horton" <e...@vascongado.usa> wrote:
> > The Cherokee used an electronic four speed automatic with overdrive.
This
> > was too long for the Wrangler, which used a three speed automatic to
save
> > length. He might be able to shoe horn the Cherokee auto in there, but
he
> > may then have drive line problems without a slip joint eliminator. The
AX15
> > manual transmission may be the right length, but I believe it is a bit
> > longer than the AX5, so he will likely need drive shafts. The best way
to
> > accomplish this swap is to trade the vehicle in on a six cylinder. I
cannot
> > over-emphasize how much easier that would be. I am pretty happy with
mine,
> > although I do have a throttle body and cat-back upgrades. It will do
eighty
> > on level ground, which is way above the speed limit.
> >
> > Earle
> >
> > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in
messagenews:zJednZIFbZ-M1SXYnZ2dnUVZ_qmpnZ2d@comcast.com...
> >
> >
> >
> > > You will need a 6cyl transmission. The AX5 will not hold up to the
4.0.
> > Your
> > > best bet is to find a wrecked Cherokee with either the auto or manual
> > > (Though the auto would probably be easier) and swap the engine,
> > > transmission, ECU and wiring harness. You'll also need new
driveshafts.
> > The
> > > rear you *may* be able to salvage from an automatic wrangler. The
cherokee
> > > front shaft *may* work on the wrangler front shaft. Your stock front
shaft
> > > may also work, but the rear shaft wont (incorrect spline count).
> >
> > > It's a difficult and complicated swap. I don't belive it's been done
by
> > many
> > > 2.5L owners. I had an 89 YJ 2.5L that turned 33" tires through 4.10
> > gearing
> > > without issue.
> >
> > > You're better off buying a 4.0 throttle body, header, and exhaust IMO.
> >
> > > Carl
> >
> > > "Chehalisd" <chehal...@netscape.net> wrote in message
> > >news:1169701503.985146.101460@m58g2000cwm.googleg roups.com...
> > > > I've been combing the web for conversion notes from a 2.5L SE to
4.0L
> > > > Sport engine swap with no luck. I found a thread on this forum from
> > > > back in 1998 that said I'd need the Sport transmission and bell
housing
> > > > to go with the 6cyl. and that the swap would probably be pretty
boring,
> > > > but no further details. I have to believe this has been done by
many
> > > > unsatisfied 4cyl. owners. Does anyone have any personal experience
or
> > > > know of a link?- Hide quoted text -- Show quoted text -
>

Earle Horton

It's a waste of time in my opinion. You want to step back and think of
easier ways to do this. Taking over an abandoned project you find in the
newspaper is one. You could probably find one for ten cents on the dollar.
If you like fabricating parts and can do it well, then maybe this isn't such
a bad idea. But if you were like that, you would already have your own
custom off road vehicle business and more orders than you could possibly
handle.

Earle

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169787258.524824.48800@p10g2000cwp.googlegro ups.com...
> Earle Horton!? Your the one who left the post I found from back in '98.
> What a trip. It sounds like I'm going to have to swap out the entire
> underside of my rig to get a 6cyl in there. If I'm going to do that I
> might as well go for a V8! I've found plenty of tech notes on V8
> swaps, now I know why.
>
> On Jan 24, 10:48 pm, "Earle Horton" <e...@vascongado.usa> wrote:
> > The Cherokee used an electronic four speed automatic with overdrive.
This
> > was too long for the Wrangler, which used a three speed automatic to
save
> > length. He might be able to shoe horn the Cherokee auto in there, but
he
> > may then have drive line problems without a slip joint eliminator. The
AX15
> > manual transmission may be the right length, but I believe it is a bit
> > longer than the AX5, so he will likely need drive shafts. The best way
to
> > accomplish this swap is to trade the vehicle in on a six cylinder. I
cannot
> > over-emphasize how much easier that would be. I am pretty happy with
mine,
> > although I do have a throttle body and cat-back upgrades. It will do
eighty
> > on level ground, which is way above the speed limit.
> >
> > Earle
> >
> > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in
messagenews:zJednZIFbZ-M1SXYnZ2dnUVZ_qmpnZ2d@comcast.com...
> >
> >
> >
> > > You will need a 6cyl transmission. The AX5 will not hold up to the
4.0.
> > Your
> > > best bet is to find a wrecked Cherokee with either the auto or manual
> > > (Though the auto would probably be easier) and swap the engine,
> > > transmission, ECU and wiring harness. You'll also need new
driveshafts.
> > The
> > > rear you *may* be able to salvage from an automatic wrangler. The
cherokee
> > > front shaft *may* work on the wrangler front shaft. Your stock front
shaft
> > > may also work, but the rear shaft wont (incorrect spline count).
> >
> > > It's a difficult and complicated swap. I don't belive it's been done
by
> > many
> > > 2.5L owners. I had an 89 YJ 2.5L that turned 33" tires through 4.10
> > gearing
> > > without issue.
> >
> > > You're better off buying a 4.0 throttle body, header, and exhaust IMO.
> >
> > > Carl
> >
> > > "Chehalisd" <chehal...@netscape.net> wrote in message
> > >news:1169701503.985146.101460@m58g2000cwm.googleg roups.com...
> > > > I've been combing the web for conversion notes from a 2.5L SE to
4.0L
> > > > Sport engine swap with no luck. I found a thread on this forum from
> > > > back in 1998 that said I'd need the Sport transmission and bell
housing
> > > > to go with the 6cyl. and that the swap would probably be pretty
boring,
> > > > but no further details. I have to believe this has been done by
many
> > > > unsatisfied 4cyl. owners. Does anyone have any personal experience
or
> > > > know of a link?- Hide quoted text -- Show quoted text -
>

Dave Milne

I suspect you would be better selling it, and buying a 4.0

Dave

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169701503.985146.101460@m58g2000cwm.googlegr oups.com...
> I've been combing the web for conversion notes from a 2.5L SE to 4.0L
> Sport engine swap with no luck. I found a thread on this forum from
> back in 1998 that said I'd need the Sport transmission and bell housing
> to go with the 6cyl. and that the swap would probably be pretty boring,
> but no further details. I have to believe this has been done by many
> unsatisfied 4cyl. owners. Does anyone have any personal experience or
> know of a link?
>

Dave Milne

I suspect you would be better selling it, and buying a 4.0

Dave

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169701503.985146.101460@m58g2000cwm.googlegr oups.com...
> I've been combing the web for conversion notes from a 2.5L SE to 4.0L
> Sport engine swap with no luck. I found a thread on this forum from
> back in 1998 that said I'd need the Sport transmission and bell housing
> to go with the 6cyl. and that the swap would probably be pretty boring,
> but no further details. I have to believe this has been done by many
> unsatisfied 4cyl. owners. Does anyone have any personal experience or
> know of a link?
>

Dave Milne

I suspect you would be better selling it, and buying a 4.0

Dave

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169701503.985146.101460@m58g2000cwm.googlegr oups.com...
> I've been combing the web for conversion notes from a 2.5L SE to 4.0L
> Sport engine swap with no luck. I found a thread on this forum from
> back in 1998 that said I'd need the Sport transmission and bell housing
> to go with the 6cyl. and that the swap would probably be pretty boring,
> but no further details. I have to believe this has been done by many
> unsatisfied 4cyl. owners. Does anyone have any personal experience or
> know of a link?
>

Dave Milne

I suspect you would be better selling it, and buying a 4.0

Dave

"Chehalisd" <chehalisd@netscape.net> wrote in message
news:1169701503.985146.101460@m58g2000cwm.googlegr oups.com...
> I've been combing the web for conversion notes from a 2.5L SE to 4.0L
> Sport engine swap with no luck. I found a thread on this forum from
> back in 1998 that said I'd need the Sport transmission and bell housing
> to go with the 6cyl. and that the swap would probably be pretty boring,
> but no further details. I have to believe this has been done by many
> unsatisfied 4cyl. owners. Does anyone have any personal experience or
> know of a link?
>